AppleWin/source/NTSC.cpp

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/*
AppleWin : An Apple //e emulator for Windows
Copyright (C) 2010-2011, William S Simms
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Copyright (C) 2014-2015 Michael Pohoreski
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AppleWin is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
AppleWin is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with AppleWin; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
// Includes
#include "StdAfx.h"
#include "AppleWin.h"
#include "CPU.h"
#include "Frame.h" // FRAMEBUFFER_W FRAMEBUFFER_H
#include "Memory.h" // MemGetMainPtr() MemGetBankPtr()
#include "Video.h" // g_pFramebufferbits
#include "NTSC.h"
#include "NTSC_CharSet.cpp"
//LPBYTE MemGetMainPtr(const WORD);
//LPBYTE MemGetBankPtr(const UINT nBank);
// Defines
#define HGR_TEST_PATTERN 0
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#define PI 3.1415926535898f
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#define DEG_TO_RAD(x) (PI*(x)/180.f) // 2PI=360, PI=180,PI/2=90,PI/4=45
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#define RAD_45 PI*0.25f
#define RAD_90 PI*0.5f
#define RAD_360 PI*2.f
#ifndef CHROMA_BLUR
#define CHROMA_BLUR 1 // Default: 1; 1 = blur along ~8 pixels; 0 = sharper
#endif
#ifndef CHROMA_FILTER
#define CHROMA_FILTER 1 // If no chroma blur; 0 = use chroma as-is, 1 = soft chroma blur, strong color fringes 2 = more blur, muted chroma fringe
#endif
#if CHROMA_BLUR
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//#define CYCLESTART (PI/4.f) // PI/4 = 45 degrees
#define CYCLESTART (DEG_TO_RAD(45))
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#else // sharpness is higher, less color bleed
#if CHROMA_FILTER == 2
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#define CYCLESTART (PI/4.f) // PI/4 = 45 degrees // c = init_signal_prefilter(z);
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#else
// #define CYCLESTART DEG_TO_RAD(90) // (PI*0.5) // PI/2 = 90 degrees // HGR: Great, GR: fail on brown
#define CYCLESTART DEG_TO_RAD(115.f) // GR perfect match of slow method
#endif
#endif
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// Types
struct ColorSpace_PAL_t // Phase Amplitute Luma
{
float phase;
float amp;
float luma;
};
struct ColorSpace_YIQ_t
{
float y, i, q;
};
struct bgra_t
{
uint8_t b;
uint8_t g;
uint8_t r;
uint8_t a;
};
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struct rgba_t
{
uint8_t r;
uint8_t g;
uint8_t b;
uint8_t a;
};
struct ColorSpace_BGRA_t
{
union
{
uint32_t n;
bgra_t bgra;
rgba_t rgba;
};
};
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// Globals (Public) ___________________________________________________
uint16_t g_nVideoClockVert = 0; // 9-bit: VC VB VA V5 V4 V3 V2 V1 V0 = 0 .. 262
uint16_t g_nVideoClockHorz = 0; // 6-bit: H5 H4 H3 H2 H1 H0 = 0 .. 64, 25 >= visible
// Globals (Private) __________________________________________________
static int g_nVideoCharSet = 0;
static int g_nVideoMixed = 0;
static int g_nHiresPage = 1;
static int g_nTextPage = 1;
// Understanding the Apple II, Timing Generation and the Video Scanner, Pg 3-11
// Vertical Scanning
// Horizontal Scanning
// "There are exactly 17030 (65 x 262) 6502 cycles in every television scan of an American Apple."
#define VIDEO_SCANNER_MAX_HORZ 65 // TODO: use Video.cpp: kHClocks
#define VIDEO_SCANNER_MAX_VERT 262 // TODO: use Video.cpp: kNTSCScanLines
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#define VIDEO_SCANNER_HORZ_COLORBURST_BEG 12
#define VIDEO_SCANNER_HORZ_COLORBURST_END 16
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#define VIDEO_SCANNER_HORZ_START 25 // first displayable horz scanner index
#define VIDEO_SCANNER_Y_MIXED 160 // num scanlins for mixed graphics + text
#define VIDEO_SCANNER_Y_DISPLAY 192 // max displayable scanlines
uint16_t g_aHorzClockMemAddress[VIDEO_SCANNER_MAX_HORZ];
bgra_t *g_pVideoAddress = 0;
bgra_t *g_pScanLines[VIDEO_SCANNER_Y_DISPLAY*2]; // To maintain the 280x192 aspect ratio for 560px width, we double every scan line -> 560x384
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static unsigned (*g_pHorzClockOffset)[VIDEO_SCANNER_MAX_HORZ] = 0;
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typedef void (*UpdateScreenFunc_t)(long);
static UpdateScreenFunc_t g_apFuncVideoUpdateScanline[VIDEO_SCANNER_Y_DISPLAY];
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static UpdateScreenFunc_t g_pFuncUpdateTextScreen = 0; // updateScreenText40;
static UpdateScreenFunc_t g_pFuncUpdateGraphicsScreen = 0; // updateScreenText40;
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typedef void (*UpdatePixelFunc_t)(uint16_t);
static UpdatePixelFunc_t g_pFuncUpdateBnWPixel = 0; //updatePixelBnWMonitorSingleScanline;
static UpdatePixelFunc_t g_pFuncUpdateHuePixel = 0; //updatePixelHueMonitorSingleScanline;
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static uint8_t g_nTextFlashCounter = 0;
static uint16_t g_nTextFlashMask = 0;
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static unsigned g_aPixelMaskGR [ 16];
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static uint16_t g_aPixelDoubleMaskHGR[128]; // hgrbits -> g_aPixelDoubleMaskHGR: 7-bit mono 280 pixels to 560 pixel doubling
#define UpdateVideoAddressTXT() g_aHorzClockMemAddress[ g_nVideoClockHorz ] = ad = (g_aClockVertOffsetsTXT[g_nVideoClockVert/8] + g_pHorzClockOffset [g_nVideoClockVert/64][g_nVideoClockHorz] + (g_nTextPage * 0x400))
#define UpdateVideoAddressHGR() g_aHorzClockMemAddress[ g_nVideoClockHorz ] = ad = (g_aClockVertOffsetsHGR[g_nVideoClockVert ] + APPLE_IIE_HORZ_CLOCK_OFFSET[g_nVideoClockVert/64][g_nVideoClockHorz] + (g_nHiresPage * 0x2000)) // BUG? g_pHorzClockOffset
static int g_nLastColumnPixelNTSC;
static int g_nColorBurstPixels;
#define INITIAL_COLOR_PHASE 0
static int g_nColorPhaseNTSC = INITIAL_COLOR_PHASE;
static int g_nSignalBitsNTSC = 0;
#define NTSC_NUM_PHASES 4
#define NTSC_NUM_SEQUENCES 4096
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const uint32_t ALPHA32_MASK = 0xFF000000; // Win32: aarrggbb
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static bgra_t g_aBnWMonitor [NTSC_NUM_SEQUENCES];
static bgra_t g_aHueMonitor[NTSC_NUM_PHASES][NTSC_NUM_SEQUENCES];
static bgra_t g_aBnwColorTV [NTSC_NUM_SEQUENCES];
static bgra_t g_aHueColorTV[NTSC_NUM_PHASES][NTSC_NUM_SEQUENCES];
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// g_aBnWMonitor * g_nMonochromeRGB -> g_aBnWMonitorCustom
// g_aBnwColorTV * g_nMonochromeRGB -> g_aBnWColorTVCustom
static bgra_t g_aBnWMonitorCustom [NTSC_NUM_SEQUENCES];
static bgra_t g_aBnWColorTVCustom [NTSC_NUM_SEQUENCES];
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#define NUM_SIGZEROS 2
#define NUM_SIGPOLES 2
#define SIGGAIN 7.614490548f
#define NUM_LUMZEROS 2
#define NUM_LUMPOLES 2
//#define LUMGAIN 1.062635655e+01
//#define LUMCOEF1 -0.3412038399
//#define LUMCOEF2 0.9647813115
#define LUMGAIN 13.71331570f
#define LUMCOEF1 -0.3961075449f
#define LUMCOEF2 1.1044202472f
#define NUM_CHRZEROS 2
#define NUM_CHRPOLES 2
#define CHRGAIN 7.438011255f
// Tables
static unsigned g_aClockVertOffsetsHGR[ VIDEO_SCANNER_MAX_VERT ] =
{
0x0000,0x0400,0x0800,0x0C00,0x1000,0x1400,0x1800,0x1C00,0x0080,0x0480,0x0880,0x0C80,0x1080,0x1480,0x1880,0x1C80,
0x0100,0x0500,0x0900,0x0D00,0x1100,0x1500,0x1900,0x1D00,0x0180,0x0580,0x0980,0x0D80,0x1180,0x1580,0x1980,0x1D80,
0x0200,0x0600,0x0A00,0x0E00,0x1200,0x1600,0x1A00,0x1E00,0x0280,0x0680,0x0A80,0x0E80,0x1280,0x1680,0x1A80,0x1E80,
0x0300,0x0700,0x0B00,0x0F00,0x1300,0x1700,0x1B00,0x1F00,0x0380,0x0780,0x0B80,0x0F80,0x1380,0x1780,0x1B80,0x1F80,
0x0000,0x0400,0x0800,0x0C00,0x1000,0x1400,0x1800,0x1C00,0x0080,0x0480,0x0880,0x0C80,0x1080,0x1480,0x1880,0x1C80,
0x0100,0x0500,0x0900,0x0D00,0x1100,0x1500,0x1900,0x1D00,0x0180,0x0580,0x0980,0x0D80,0x1180,0x1580,0x1980,0x1D80,
0x0200,0x0600,0x0A00,0x0E00,0x1200,0x1600,0x1A00,0x1E00,0x0280,0x0680,0x0A80,0x0E80,0x1280,0x1680,0x1A80,0x1E80,
0x0300,0x0700,0x0B00,0x0F00,0x1300,0x1700,0x1B00,0x1F00,0x0380,0x0780,0x0B80,0x0F80,0x1380,0x1780,0x1B80,0x1F80,
0x0000,0x0400,0x0800,0x0C00,0x1000,0x1400,0x1800,0x1C00,0x0080,0x0480,0x0880,0x0C80,0x1080,0x1480,0x1880,0x1C80,
0x0100,0x0500,0x0900,0x0D00,0x1100,0x1500,0x1900,0x1D00,0x0180,0x0580,0x0980,0x0D80,0x1180,0x1580,0x1980,0x1D80,
0x0200,0x0600,0x0A00,0x0E00,0x1200,0x1600,0x1A00,0x1E00,0x0280,0x0680,0x0A80,0x0E80,0x1280,0x1680,0x1A80,0x1E80,
0x0300,0x0700,0x0B00,0x0F00,0x1300,0x1700,0x1B00,0x1F00,0x0380,0x0780,0x0B80,0x0F80,0x1380,0x1780,0x1B80,0x1F80,
0x0000,0x0400,0x0800,0x0C00,0x1000,0x1400,0x1800,0x1C00,0x0080,0x0480,0x0880,0x0C80,0x1080,0x1480,0x1880,0x1C80,
0x0100,0x0500,0x0900,0x0D00,0x1100,0x1500,0x1900,0x1D00,0x0180,0x0580,0x0980,0x0D80,0x1180,0x1580,0x1980,0x1D80,
0x0200,0x0600,0x0A00,0x0E00,0x1200,0x1600,0x1A00,0x1E00,0x0280,0x0680,0x0A80,0x0E80,0x1280,0x1680,0x1A80,0x1E80,
0x0300,0x0700,0x0B00,0x0F00,0x1300,0x1700,0x1B00,0x1F00,0x0380,0x0780,0x0B80,0x0F80,0x1380,0x1780,0x1B80,0x1F80,
0x0B80,0x0F80,0x1380,0x1780,0x1B80,0x1F80
};
static unsigned g_aClockVertOffsetsTXT[33] =
{
0x0000,0x0080,0x0100,0x0180,0x0200,0x0280,0x0300,0x0380,
0x0000,0x0080,0x0100,0x0180,0x0200,0x0280,0x0300,0x0380,
0x0000,0x0080,0x0100,0x0180,0x0200,0x0280,0x0300,0x0380,
0x0000,0x0080,0x0100,0x0180,0x0200,0x0280,0x0300,0x0380,
0x380
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};
static unsigned APPLE_IIP_HORZ_CLOCK_OFFSET[5][VIDEO_SCANNER_MAX_HORZ] =
{
{0x1068,0x1068,0x1069,0x106A,0x106B,0x106C,0x106D,0x106E,0x106F,
0x1070,0x1071,0x1072,0x1073,0x1074,0x1075,0x1076,0x1077,
0x1078,0x1079,0x107A,0x107B,0x107C,0x107D,0x107E,0x107F,
0x0000,0x0001,0x0002,0x0003,0x0004,0x0005,0x0006,0x0007,
0x0008,0x0009,0x000A,0x000B,0x000C,0x000D,0x000E,0x000F,
0x0010,0x0011,0x0012,0x0013,0x0014,0x0015,0x0016,0x0017,
0x0018,0x0019,0x001A,0x001B,0x001C,0x001D,0x001E,0x001F,
0x0020,0x0021,0x0022,0x0023,0x0024,0x0025,0x0026,0x0027},
{0x1010,0x1010,0x1011,0x1012,0x1013,0x1014,0x1015,0x1016,0x1017,
0x1018,0x1019,0x101A,0x101B,0x101C,0x101D,0x101E,0x101F,
0x1020,0x1021,0x1022,0x1023,0x1024,0x1025,0x1026,0x1027,
0x0028,0x0029,0x002A,0x002B,0x002C,0x002D,0x002E,0x002F,
0x0030,0x0031,0x0032,0x0033,0x0034,0x0035,0x0036,0x0037,
0x0038,0x0039,0x003A,0x003B,0x003C,0x003D,0x003E,0x003F,
0x0040,0x0041,0x0042,0x0043,0x0044,0x0045,0x0046,0x0047,
0x0048,0x0049,0x004A,0x004B,0x004C,0x004D,0x004E,0x004F},
{0x1038,0x1038,0x1039,0x103A,0x103B,0x103C,0x103D,0x103E,0x103F,
0x1040,0x1041,0x1042,0x1043,0x1044,0x1045,0x1046,0x1047,
0x1048,0x1049,0x104A,0x104B,0x104C,0x104D,0x104E,0x104F,
0x0050,0x0051,0x0052,0x0053,0x0054,0x0055,0x0056,0x0057,
0x0058,0x0059,0x005A,0x005B,0x005C,0x005D,0x005E,0x005F,
0x0060,0x0061,0x0062,0x0063,0x0064,0x0065,0x0066,0x0067,
0x0068,0x0069,0x006A,0x006B,0x006C,0x006D,0x006E,0x006F,
0x0070,0x0071,0x0072,0x0073,0x0074,0x0075,0x0076,0x0077},
{0x1060,0x1060,0x1061,0x1062,0x1063,0x1064,0x1065,0x1066,0x1067,
0x1068,0x1069,0x106A,0x106B,0x106C,0x106D,0x106E,0x106F,
0x1070,0x1071,0x1072,0x1073,0x1074,0x1075,0x1076,0x1077,
0x0078,0x0079,0x007A,0x007B,0x007C,0x007D,0x007E,0x007F,
0x0000,0x0001,0x0002,0x0003,0x0004,0x0005,0x0006,0x0007,
0x0008,0x0009,0x000A,0x000B,0x000C,0x000D,0x000E,0x000F,
0x0010,0x0011,0x0012,0x0013,0x0014,0x0015,0x0016,0x0017,
0x0018,0x0019,0x001A,0x001B,0x001C,0x001D,0x001E,0x001F},
{0x1060,0x1060,0x1061,0x1062,0x1063,0x1064,0x1065,0x1066,0x1067,
0x1068,0x1069,0x106A,0x106B,0x106C,0x106D,0x106E,0x106F,
0x1070,0x1071,0x1072,0x1073,0x1074,0x1075,0x1076,0x1077,
0x0078,0x0079,0x007A,0x007B,0x007C,0x007D,0x007E,0x007F,
0x0000,0x0001,0x0002,0x0003,0x0004,0x0005,0x0006,0x0007,
0x0008,0x0009,0x000A,0x000B,0x000C,0x000D,0x000E,0x000F,
0x0010,0x0011,0x0012,0x0013,0x0014,0x0015,0x0016,0x0017,
0x0018,0x0019,0x001A,0x001B,0x001C,0x001D,0x001E,0x001F}
};
static unsigned APPLE_IIE_HORZ_CLOCK_OFFSET[5][VIDEO_SCANNER_MAX_HORZ] =
{
{0x0068,0x0068,0x0069,0x006A,0x006B,0x006C,0x006D,0x006E,0x106F, // bug? 0x106F
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0x0070,0x0071,0x0072,0x0073,0x0074,0x0075,0x0076,0x0077,
0x0078,0x0079,0x007A,0x007B,0x007C,0x007D,0x007E,0x007F,
0x0000,0x0001,0x0002,0x0003,0x0004,0x0005,0x0006,0x0007,
0x0008,0x0009,0x000A,0x000B,0x000C,0x000D,0x000E,0x000F,
0x0010,0x0011,0x0012,0x0013,0x0014,0x0015,0x0016,0x0017,
0x0018,0x0019,0x001A,0x001B,0x001C,0x001D,0x001E,0x001F,
0x0020,0x0021,0x0022,0x0023,0x0024,0x0025,0x0026,0x0027},
{0x0010,0x0010,0x0011,0x0012,0x0013,0x0014,0x0015,0x0016,0x0017,
0x0018,0x0019,0x001A,0x001B,0x001C,0x001D,0x001E,0x001F,
0x0020,0x0021,0x0022,0x0023,0x0024,0x0025,0x0026,0x0027,
0x0028,0x0029,0x002A,0x002B,0x002C,0x002D,0x002E,0x002F,
0x0030,0x0031,0x0032,0x0033,0x0034,0x0035,0x0036,0x0037,
0x0038,0x0039,0x003A,0x003B,0x003C,0x003D,0x003E,0x003F,
0x0040,0x0041,0x0042,0x0043,0x0044,0x0045,0x0046,0x0047,
0x0048,0x0049,0x004A,0x004B,0x004C,0x004D,0x004E,0x004F},
{0x0038,0x0038,0x0039,0x003A,0x003B,0x003C,0x003D,0x003E,0x003F,
0x0040,0x0041,0x0042,0x0043,0x0044,0x0045,0x0046,0x0047,
0x0048,0x0049,0x004A,0x004B,0x004C,0x004D,0x004E,0x004F,
0x0050,0x0051,0x0052,0x0053,0x0054,0x0055,0x0056,0x0057,
0x0058,0x0059,0x005A,0x005B,0x005C,0x005D,0x005E,0x005F,
0x0060,0x0061,0x0062,0x0063,0x0064,0x0065,0x0066,0x0067,
0x0068,0x0069,0x006A,0x006B,0x006C,0x006D,0x006E,0x006F,
0x0070,0x0071,0x0072,0x0073,0x0074,0x0075,0x0076,0x0077},
{0x0060,0x0060,0x0061,0x0062,0x0063,0x0064,0x0065,0x0066,0x0067,
0x0068,0x0069,0x006A,0x006B,0x006C,0x006D,0x006E,0x006F,
0x0070,0x0071,0x0072,0x0073,0x0074,0x0075,0x0076,0x0077,
0x0078,0x0079,0x007A,0x007B,0x007C,0x007D,0x007E,0x007F,
0x0000,0x0001,0x0002,0x0003,0x0004,0x0005,0x0006,0x0007,
0x0008,0x0009,0x000A,0x000B,0x000C,0x000D,0x000E,0x000F,
0x0010,0x0011,0x0012,0x0013,0x0014,0x0015,0x0016,0x0017,
0x0018,0x0019,0x001A,0x001B,0x001C,0x001D,0x001E,0x001F},
{0x0060,0x0060,0x0061,0x0062,0x0063,0x0064,0x0065,0x0066,0x0067,
0x0068,0x0069,0x006A,0x006B,0x006C,0x006D,0x006E,0x006F,
0x0070,0x0071,0x0072,0x0073,0x0074,0x0075,0x0076,0x0077,
0x0078,0x0079,0x007A,0x007B,0x007C,0x007D,0x007E,0x007F,
0x0000,0x0001,0x0002,0x0003,0x0004,0x0005,0x0006,0x0007,
0x0008,0x0009,0x000A,0x000B,0x000C,0x000D,0x000E,0x000F,
0x0010,0x0011,0x0012,0x0013,0x0014,0x0015,0x0016,0x0017,
0x0018,0x0019,0x001A,0x001B,0x001C,0x001D,0x001E,0x001F}
};
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/*
http://www.kreativekorp.com/miscpages/a2info/munafo.shtml
"Primary" lo-res colors
Color GR Duty cycle Phase
======================================
Red COLOR=1 45 to 135 90
Dark-blue COLOR=2 315 to 45 0
Dark-green COLOR=4 225 to 315 270
Brown COLOR=8 135 to 225 180
*/
ColorSpace_PAL_t aPaletteYIQ[ 16 ] =
{ // Lo Hi Dh
{ 0, 0, 0 } // 0 0 Black
,{ 90, 60, 25 } // 1 1 Red
,{ 0, 60, 25 } // 2 8 Dark Blue
,{ 45,100, 50 } // 3 2 9 Purple
,{270, 60, 25 } // 4 Dark Green
,{ 0, 0, 50 } // 5 Grey
,{315,100, 50 } // 6 Medium Blue
,{ 0, 60, 75 } // 7 Light Blue
,{180, 60, 25 } // 8 Brown
,{135,100, 50 } // 9 Orange
,{ 0, 0, 50 } // 10
,{ 90, 60, 75 } // 11 Pink
,{225,100, 50 } // 12 Light Green
,{180, 60, 75 } // 13 Yellow
,{270, 60, 75} // 14 Aqua
,{ 0, 0,100 } // 15 White
};
// purple HCOLOR=2 45 100 50 255 68 253
// orange HCOLOR=5 135 100 50 255 106 60
// green HCOLOR=1 225 100 50 20 245 60
// blue HCOLOR=6 315 100 50 20 207 253
rgba_t aPaletteRGB[ 16 ] =
{
{ 0, 0, 0 } // 0
,{ 227, 30, 96 } // 1
,{ 96, 78, 189 } // 2
,{ 255, 68, 253 } // 3
,{ 0, 163, 96 } // 4
,{ 156, 156, 156 } // 5
,{ 20, 207, 253 } // 6
,{ 208, 195, 255 } // 7
,{ 96, 114, 3 } // 8
,{ 255, 106, 60 } // 9
,{ 156, 156, 156 } // 10
,{ 255, 160, 208 } // 11
,{ 20, 245, 60 } // 12
,{ 208, 221, 141 } // 13
,{ 114, 255, 208 } // 14
,{ 255, 255, 255 } // 15
};
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// Prototypes
// prototype from CPU.h
//unsigned char CpuRead(unsigned short addr, unsigned long uExecutedCycles);
// prototypes from Memory.h
//unsigned char * MemGetAuxPtr (unsigned short);
//unsigned char * MemGetMainPtr (unsigned short);
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inline float clampZeroOne( const float & x );
inline uint8_t getCharSetBits( const int iChar );
inline uint16_t getLoResBits( uint8_t iByte );
inline uint32_t getScanlineColor( const uint16_t signal, const bgra_t *pTable );
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inline uint32_t* getScanlineNext1Address();
inline uint32_t* getScanlineThis0Address();
inline uint32_t* getScanlinePrev1Address();
inline uint32_t* getScanlinePrev2Address();
inline void updateColorPhase();
inline void updatePixels( uint16_t bits );
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inline void updateVideoScannerHorzEOL();
inline void updateVideoScannerAddress();
static void init_chroma_phase_table();
static void updateMonochromeTables( uint16_t r, uint16_t g, uint16_t b );
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static void updatePixelBnWColorTVSingleScanline( uint16_t compositeSignal );
static void updatePixelBnWColorTVDoubleScanline( uint16_t compositeSignal );
static void updatePixelBnWMonitorSingleScanline( uint16_t compositeSignal );
static void updatePixelBnWMonitorDoubleScanline( uint16_t compositeSignal );
static void updatePixelHueColorTVSingleScanline( uint16_t compositeSignal );
static void updatePixelHueColorTVDoubleScanline( uint16_t compositeSignal );
static void updatePixelHueMonitorSingleScanline( uint16_t compositeSignal );
static void updatePixelHueMonitorDoubleScanline( uint16_t compositeSignal );
static void updateScreenDoubleHires40( long cycles6502 );
static void updateScreenDoubleHires80( long cycles6502 );
static void updateScreenDoubleLores40( long cycles6502 );
static void updateScreenDoubleLores80( long cycles6502 );
static void updateScreenSingleHires40( long cycles6502 );
static void updateScreenSingleLores40( long cycles6502 );
static void updateScreenText40 ( long cycles6502 );
static void updateScreenText80 ( long cycles6502 );
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//===========================================================================
inline float clampZeroOne( const float & x )
{
if (x < 0.f) return 0.f;
if (x > 1.f) return 1.f;
/* ...... */ return x;
}
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//===========================================================================
inline uint8_t getCharSetBits(int iChar)
{
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return csbits[g_nVideoCharSet][iChar][g_nVideoClockVert & 7];
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}
//===========================================================================
inline uint16_t getLoResBits( uint8_t iByte )
{
return g_aPixelMaskGR[ (iByte >> (g_nVideoClockVert & 4)) & 0xF ];
}
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//===========================================================================
inline void updateColorPhase()
{
g_nColorPhaseNTSC++;
g_nColorPhaseNTSC &= 3;
}
//===========================================================================
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inline void updateVideoScannerHorzEOL()
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{
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if (VIDEO_SCANNER_MAX_HORZ == ++g_nVideoClockHorz)
{
if (g_nVideoClockVert < VIDEO_SCANNER_Y_DISPLAY)
{
//VIDEO_DRAW_ENDLINE();
if (g_nColorBurstPixels < 2)
{
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g_pFuncUpdateBnWPixel(g_nLastColumnPixelNTSC);
#if 0 // BUGFIX: This writes out-of-bounds for a 560x384 framebuffer
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g_pFuncUpdateBnWPixel(0);
g_pFuncUpdateBnWPixel(0);
g_pFuncUpdateBnWPixel(0);
#endif
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}
else
{
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g_pFuncUpdateHuePixel(g_nLastColumnPixelNTSC);
#if 0 // BUGFIX: This writes out-of-bounds for a 560x384 framebuffer
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g_pFuncUpdateHuePixel(0);
g_pFuncUpdateHuePixel(0);
g_pFuncUpdateHuePixel(0);
#endif
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}
}
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g_nVideoClockHorz = 0;
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if (++g_nVideoClockVert == VIDEO_SCANNER_MAX_VERT)
{
g_nVideoClockVert = 0;
if ((++g_nTextFlashCounter & 0xF) == 0)
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g_nTextFlashMask ^= -1; // 16-bits
}
if (g_nVideoClockVert < VIDEO_SCANNER_Y_DISPLAY)
{
updateVideoScannerAddress();
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}
}
}
#if 0
#define updateFramebufferMonitorSingleScanline(signal,table) \
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do { \
uint32_t *cp, *mp; \
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g_nSignalBitsNTSC = ((g_nSignalBitsNTSC << 1) | signal) & 0xFFF; \
cp = (uint32_t*) &table[g_nSignalBitsNTSC]; \
*(uint32_t*)g_pVideoAddress = *cp; \
mp = (uint32_t*)(g_pVideoAddress - FRAMEBUFFER_W); \
*mp = ((*cp & 0x00fcfcfc) >> 2) | ALPHA32_MASK; \
g_pVideoAddress++; \
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} while(0)
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#define updateFramebufferColorTVSingleScanline(signal,table) \
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do { \
uint32_t ntscp, prevp, betwp; \
uint32_t *prevlin, *between; \
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g_nSignalBitsNTSC = ((g_nSignalBitsNTSC << 1) | signal) & 0xFFF; \
prevlin = (uint32_t*)(g_pVideoAddress + 2*FRAMEBUFFER_W); \
between = (uint32_t*)(g_pVideoAddress + 1*FRAMEBUFFER_W); \
ntscp = *(uint32_t*) &table[g_nSignalBitsNTSC]; /* raw current NTSC color */ \
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prevp = *prevlin; \
betwp = ntscp - ((ntscp & 0x00fcfcfc) >> 2); \
*between = betwp | ALPHA32_MASK; \
*(uint32_t*)g_pVideoAddress = ntscp; \
g_pVideoAddress++; \
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} while(0)
#define updateFramebufferMonitorDoubleScanline(signal,table) \
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do { \
uint32_t *cp, *mp; \
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g_nSignalBitsNTSC = ((g_nSignalBitsNTSC << 1) | signal) & 0xFFF; \
cp = (uint32_t*) &table[g_nSignalBitsNTSC]; \
mp = (uint32_t*)(g_pVideoAddress - FRAMEBUFFER_W); \
*(uint32_t*)g_pVideoAddress = *mp = *cp; \
g_pVideoAddress++; \
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} while(0)
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#define updateFramebufferColorTVDoubleScanline(signal,table) \
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do { \
uint32_t ntscp, prevp, betwp; \
uint32_t *prevlin, *between; \
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g_nSignalBitsNTSC = ((g_nSignalBitsNTSC << 1) | signal) & 0xFFF; \
prevlin = (uint32_t*)(g_pVideoAddress + 2*FRAMEBUFFER_W); \
between = (uint32_t*)(g_pVideoAddress + 1*FRAMEBUFFER_W); \
ntscp = *(uint32_t*) &table[g_nSignalBitsNTSC]; /* raw current NTSC color */ \
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prevp = *prevlin; \
betwp = ((ntscp & 0x00fefefe) >> 1) + ((prevp & 0x00fefefe) >> 1); \
*between = betwp | ALPHA32_MASK; \
*(uint32_t*)g_pVideoAddress = ntscp; \
g_pVideoAddress++; \
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} while(0)
#else
inline uint32_t* getScanlineNext1Address()
{
return (uint32_t*) (g_pVideoAddress - 1*FRAMEBUFFER_W);
}
inline uint32_t* getScanlineThis0Address()
{
return (uint32_t*) g_pVideoAddress;
}
inline uint32_t* getScanlinePrev1Address()
{
return (uint32_t*) (g_pVideoAddress + 1*FRAMEBUFFER_W);
}
inline uint32_t* getScanlinePrev2Address()
{
return (uint32_t*) (g_pVideoAddress + 2*FRAMEBUFFER_W);
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}
inline uint32_t getScanlineColor( const uint16_t signal, const bgra_t *pTable )
{
g_nSignalBitsNTSC = ((g_nSignalBitsNTSC << 1) | signal) & 0xFFF; // 14-bit
return *(uint32_t*) &pTable[ g_nSignalBitsNTSC ];
}
inline void updateFramebufferMonitorSingleScanline( uint16_t signal, bgra_t *pTable )
{
/* */ uint32_t *pLine0Address = getScanlineThis0Address();
/* */ uint32_t *pLine1Address = getScanlineNext1Address();
const uint32_t color0 = getScanlineColor( signal, pTable );
const uint32_t color1 = ((color0 & 0x00fcfcfc) >> 2); // 25% Blend (original)
// const uint32_t color1 = ((color0 & 0x00fefefe) >> 1); // 50% Blend -- looks OK most of the time; Archon looks poor
/* */ *pLine1Address = color1 | ALPHA32_MASK;
/* */ *pLine0Address = color0;
/* */ g_pVideoAddress++;
}
inline void updateFramebufferMonitorDoubleScanline( uint16_t signal, bgra_t *pTable )
{
/* */ uint32_t *pLine0Address = getScanlineThis0Address();
/* */ uint32_t *pLine1Address = getScanlineNext1Address();
const uint32_t color0 = getScanlineColor( signal, pTable );
/* */ *pLine1Address = color0;
/* */ *pLine0Address = color0;
/* */ g_pVideoAddress++;
}
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inline void updateFramebufferColorTVSingleScanline( uint16_t signal, bgra_t *pTable )
{
/* */ uint32_t *pLine0Address = getScanlineThis0Address();
/* */ uint32_t *pLine1Address = getScanlinePrev1Address();
/* */ uint32_t *pLine2Address = getScanlinePrev2Address();
const uint32_t color0 = getScanlineColor( signal, pTable );
const uint32_t color2 = *pLine2Address;
const uint32_t color1 = color0 - ((color0 & 0x00fcfcfc) >> 2);
/* */ *pLine1Address = color1 | ALPHA32_MASK;
/* */ *pLine0Address = color0;
/* */ g_pVideoAddress++;
}
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inline void updateFramebufferColorTVDoubleScanline( uint16_t signal, bgra_t *pTable )
{
/* */ uint32_t *pLine0Address = getScanlineThis0Address();
/* */ uint32_t *pLine1Address = getScanlinePrev1Address();
const uint32_t *pLine2Address = getScanlinePrev2Address();
const uint32_t color0 = getScanlineColor( signal, pTable );
const uint32_t color2 = *pLine2Address;
const uint32_t color1 = ((color0 & 0x00fefefe) >> 1) + ((color2 & 0x00fefefe) >> 1); // 50% Blend
/* */ *pLine1Address = color1 | ALPHA32_MASK;
/* */ *pLine0Address = color0;
/* */ g_pVideoAddress++;
}
#endif
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//===========================================================================
inline void updatePixels( uint16_t bits )
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{
if (g_nColorBurstPixels < 2)
{
/* #1 of 7 */
g_pFuncUpdateBnWPixel(bits & 1); bits >>= 1;
g_pFuncUpdateBnWPixel(bits & 1); bits >>= 1;
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/* #2 of 7 */
g_pFuncUpdateBnWPixel(bits & 1); bits >>= 1;
g_pFuncUpdateBnWPixel(bits & 1); bits >>= 1;
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/* #3 of 7 */
g_pFuncUpdateBnWPixel(bits & 1); bits >>= 1;
g_pFuncUpdateBnWPixel(bits & 1); bits >>= 1;
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/* #4 of 7 */
g_pFuncUpdateBnWPixel(bits & 1); bits >>= 1;
g_pFuncUpdateBnWPixel(bits & 1); bits >>= 1;
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/* #5 of 7 */
g_pFuncUpdateBnWPixel(bits & 1); bits >>= 1;
g_pFuncUpdateBnWPixel(bits & 1); bits >>= 1;
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/* #6 of 7 */
g_pFuncUpdateBnWPixel(bits & 1); bits >>= 1;
g_pFuncUpdateBnWPixel(bits & 1); bits >>= 1;
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/* #7 of 7 */
g_pFuncUpdateBnWPixel(bits & 1); bits >>= 1;
g_pFuncUpdateBnWPixel(bits & 1);
g_nLastColumnPixelNTSC=bits& 1 ; bits >>= 1;
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}
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else
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{
/* #1 of 7 */ // abcd efgh ijkl mnop
g_pFuncUpdateHuePixel(bits & 1); bits >>= 1; // 0abc defg hijk lmno
g_pFuncUpdateHuePixel(bits & 1); bits >>= 1; // 00ab cdef ghi jklmn
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/* #2 of 7 */
g_pFuncUpdateHuePixel(bits & 1); bits >>= 1; // 000a bcde fghi jklm
g_pFuncUpdateHuePixel(bits & 1); bits >>= 1; // 0000 abcd efgh ijkl
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/* #3 of 7 */
g_pFuncUpdateHuePixel(bits & 1); bits >>= 1; // 0000 0abc defg hijk
g_pFuncUpdateHuePixel(bits & 1); bits >>= 1; // 0000 00ab cdef ghij
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/* #4 of 7 */
g_pFuncUpdateHuePixel(bits & 1); bits >>= 1; // 0000 000a bcde fghi
g_pFuncUpdateHuePixel(bits & 1); bits >>= 1; // 0000 0000 abcd efgh
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/* #5 of 7 */
g_pFuncUpdateHuePixel(bits & 1); bits >>= 1; // 0000 0000 0abc defg
g_pFuncUpdateHuePixel(bits & 1); bits >>= 1; // 0000 0000 00ab cdef
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/* #6 of 7 */
g_pFuncUpdateHuePixel(bits & 1); bits >>= 1; // 0000 0000 000a bcde
g_pFuncUpdateHuePixel(bits & 1); bits >>= 1; // 0000 0000 0000 abcd
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/* #7 of 7 */
g_pFuncUpdateHuePixel(bits & 1); bits >>= 1; // 0000 0000 0000 0abc
g_pFuncUpdateHuePixel(bits & 1);
g_nLastColumnPixelNTSC=bits& 1 ; bits >>= 1; // 0000 0000 0000 00ab
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}
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}
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inline void updateVideoScannerAddress()
{
g_pVideoAddress = g_pScanLines[2*g_nVideoClockVert];
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g_nColorPhaseNTSC = INITIAL_COLOR_PHASE;
g_nLastColumnPixelNTSC = 0;
g_nSignalBitsNTSC = 0;
}
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//===========================================================================
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static void init_video_tables (void)
{
/*
Convert 7-bit monochrome luminance to 14-bit double pixel luminance
Chroma will be applied later based on the color phase in updatePixelHueMonitorDoubleScanline( luminanceBit )
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0x001 -> 0x0003
0x002 -> 0x000C
0x004 -> 0x0030
0x008 -> 0x00C0
: -> :
0x100 -> 0x4000
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*/
for (uint8_t byte = 0; byte < 0x80; byte++ ) // Optimization: hgrbits second 128 entries are mirror of first 128
for (uint8_t bits = 0; bits < 7; bits++ ) // high bit = half pixel shift; pre-optimization: bits < 8
if (byte & (1 << bits)) // pow2 mask
g_aPixelDoubleMaskHGR[byte] |= 3 << (bits*2);
for ( uint16_t color = 0; color < 16; color++ )
g_aPixelMaskGR[ color ] = (color << 12) | (color << 8) | (color << 4) | (color << 0);
}
// sadly float64 precision is needed
#define real double
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//===========================================================================
static real init_signal_prefilter (real z)
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{
static real xv[NUM_SIGZEROS + 1] = { 0,0,0 };
static real yv[NUM_SIGPOLES + 1] = { 0,0,0 };
xv[0] = xv[1];
xv[1] = xv[2];
xv[2] = z / SIGGAIN;
yv[0] = yv[1];
yv[1] = yv[2];
yv[2] = xv[0] + xv[2] + (2.f * xv[1]) + (-0.2718798058f * yv[0]) + (0.7465656072f * yv[1]);
return yv[2];
}
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//===========================================================================
static real init_luma0_filter (real z)
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{
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static real xv[NUM_LUMZEROS + 1] = { 0,0,0 };
static real yv[NUM_LUMPOLES + 1] = { 0,0,0 };
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xv[0] = xv[1];
xv[1] = xv[2];
xv[2] = z / LUMGAIN;
yv[0] = yv[1];
yv[1] = yv[2];
yv[2] = xv[0] + xv[2] + (2.f * xv[1]) + (LUMCOEF1 * yv[0]) + (LUMCOEF2 * yv[1]);
return yv[2];
}
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//===========================================================================
static real init_luma1_filter (real z)
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{
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static real xv[NUM_LUMZEROS + 1] = { 0,0,0};
static real yv[NUM_LUMPOLES + 1] = { 0,0,0};
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xv[0] = xv[1];
xv[1] = xv[2];
xv[2] = z / LUMGAIN;
yv[0] = yv[1];
yv[1] = yv[2];
yv[2] = xv[0] + xv[2] + (2 * xv[1]) + (LUMCOEF1 * yv[0]) + (LUMCOEF2 * yv[1]);
return yv[2];
}
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//===========================================================================
static real init_chroma_filter (real z)
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{
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static real xv[NUM_CHRZEROS + 1] = {0,0,0};
static real yv[NUM_CHRPOLES + 1] = {0,0,0};
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xv[0] = xv[1];
xv[1] = xv[2];
xv[2] = z / CHRGAIN;
yv[0] = yv[1];
yv[1] = yv[2];
yv[2] = xv[2] - xv[0] + (-0.7318893645f * yv[0]) + (1.2336442711f * yv[1]);
return yv[2];
}
// Build the 4 phase chroma lookup table
// The YI'Q' colors are hard-coded
//===========================================================================
static void init_chroma_phase_table (void)
{
int phase,s,t,n;
real z,y0,y1,c,i,q;
real phi,zz;
float brightness;
double r64,g64,b64;
float r32,g32,b32;
for (phase = 0; phase < 4; ++phase)
{
phi = (phase * RAD_90) + CYCLESTART;
for (s = 0; s < NTSC_NUM_SEQUENCES; ++s)
{
t = s;
y0 = y1 = c = i = q = 0.0;
for (n = 0; n < 12; ++n)
{
z = (real)(0 != (t & 0x800));
t = t << 1;
for(int k = 0; k < 2; k++ )
{
#if CHROMA_BLUR
//z = z * 1.25;
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zz = init_signal_prefilter(z);
c = init_chroma_filter(zz); // "Mostly" correct _if_ CYCLESTART = PI/4 = 45 degrees
y0 = init_luma0_filter(zz);
y1 = init_luma1_filter(zz - c);
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#else // CHROMA_BLUR
y0 = y0 + (z - y0) / 4.0;
y1 = y0; // fix TV mode
#if CHROMA_FILTER == 0
c = z; // sharper; "Mostly" correct _if_ CYCLESTART = 115 degrees
#endif // CHROMA_FILTER
#if CHROMA_FILTER == 1 // soft chroma blur, strong color fringes
// NOTE: This has incorrect colors! Chroma is (115-45)=70 degrees out of phase! violet <-> orange, green <-> blue
c = (z - y0); // Original -- smoother, white is solid, brighter; other colors
// ->
// c = (z - (y0 + (z-y0)/4))
// c = z - y0 - (z-y0)/4
// c = z - y0 - z/4 + y0/4
// c = z-z/4 - y0+y0/4; // Which is clearly wrong, unless CYCLESTART DEG_TO_RAD(115)
// This mode looks the most accurate for white, has better color fringes
#endif
#if CHROMA_FILTER == 2 // more blur, muted chroma fringe
// White has too much ringing, and the color fringes are muted
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c = init_signal_prefilter(z); // "Mostly" correct _if_ CYCLESTART = PI/4 = 45 degrees
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#endif
#endif // CHROMA_BLUR
c = c * 2.f;
i = i + (c * cos(phi) - i) / 8.f;
q = q + (c * sin(phi) - q) / 8.f;
phi += RAD_45; //(PI / 4);
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// if (fabs((RAD_360) - phi) < 0.001)
// phi = phi - RAD_360; // 2 * PI;
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} // k
} // samples
brightness = clampZeroOne( (float)z );
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g_aBnWMonitor[s].b = (uint8_t)(brightness * 255);
g_aBnWMonitor[s].g = (uint8_t)(brightness * 255);
g_aBnWMonitor[s].r = (uint8_t)(brightness * 255);
g_aBnWMonitor[s].a = 255;
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brightness = clampZeroOne( (float)y1);
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g_aBnwColorTV[s].b = (uint8_t)(brightness * 255);
g_aBnwColorTV[s].g = (uint8_t)(brightness * 255);
g_aBnwColorTV[s].r = (uint8_t)(brightness * 255);
g_aBnwColorTV[s].a = 255;
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/*
YI'V' to RGB
[r g b] = [y i v][ 1 1 1 ]
[0.956 -0.272 -1.105]
[0.621 -0.647 1.702]
[r] [1 0.956 0.621][y]
[g] = [1 -0.272 -0.647][i]
[b] [1 -1.105 1.702][v]
*/
#define I_TO_R 0.956f
#define I_TO_G -0.272f
#define I_TO_B -1.105f
#define Q_TO_R 0.621f
#define Q_TO_G -0.647f
#define Q_TO_B 1.702f
r64 = y0 + (I_TO_R * i) + (Q_TO_R * q);
g64 = y0 + (I_TO_G * i) + (Q_TO_G * q);
b64 = y0 + (I_TO_B * i) + (Q_TO_B * q);
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// Remove white ringing
if(brightness > 0.9f)
{
b64 += 0.25;
g64 += 0.25;
r64 += 0.25;
}
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b32 = clampZeroOne( (float)b64);
g32 = clampZeroOne( (float)g64);
r32 = clampZeroOne( (float)r64);
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g_aHueMonitor[phase][s].b = (uint8_t)(b32 * 255);
g_aHueMonitor[phase][s].g = (uint8_t)(g32 * 255);
g_aHueMonitor[phase][s].r = (uint8_t)(r32 * 255);
g_aHueMonitor[phase][s].a = 255;
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r64 = y1 + (I_TO_R * i) + (Q_TO_R * q);
g64 = y1 + (I_TO_G * i) + (Q_TO_G * q);
b64 = y1 + (I_TO_B * i) + (Q_TO_B * q);
2015-01-02 07:50:04 +00:00
2014-12-31 22:53:55 +00:00
b32 = clampZeroOne( (float)b64 );
g32 = clampZeroOne( (float)g64 );
r32 = clampZeroOne( (float)r64 );
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g_aHueColorTV[phase][s].b = (uint8_t)(b32 * 255);
g_aHueColorTV[phase][s].g = (uint8_t)(g32 * 255);
g_aHueColorTV[phase][s].r = (uint8_t)(r32 * 255);
g_aHueColorTV[phase][s].a = 255;
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}
}
}
//===========================================================================
static void updatePixelHueColorTVSingleScanline (uint16_t compositeSignal)
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{
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updateFramebufferColorTVSingleScanline(compositeSignal, g_aHueColorTV[g_nColorPhaseNTSC]);
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updateColorPhase();
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}
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//===========================================================================
static void updatePixelHueColorTVDoubleScanline (uint16_t compositeSignal)
2014-12-31 22:53:55 +00:00
{
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updateFramebufferColorTVDoubleScanline(compositeSignal, g_aHueColorTV[g_nColorPhaseNTSC]);
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updateColorPhase();
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}
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//===========================================================================
static void updatePixelHueMonitorSingleScanline (uint16_t compositeSignal)
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{
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updateFramebufferMonitorSingleScanline(compositeSignal, g_aHueMonitor[g_nColorPhaseNTSC]);
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updateColorPhase();
}
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//===========================================================================
static void updatePixelHueMonitorDoubleScanline (uint16_t compositeSignal)
2014-12-31 22:53:55 +00:00
{
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updateFramebufferMonitorDoubleScanline(compositeSignal, g_aHueMonitor[g_nColorPhaseNTSC]);
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updateColorPhase();
}
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//===========================================================================
static void updatePixelBnWMonitorSingleScanline (uint16_t compositeSignal)
2014-12-31 22:53:55 +00:00
{
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updateFramebufferMonitorSingleScanline(compositeSignal, g_aBnWMonitorCustom);
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}
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//===========================================================================
static void updatePixelBnWMonitorDoubleScanline (uint16_t compositeSignal)
2014-12-31 22:53:55 +00:00
{
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updateFramebufferMonitorDoubleScanline(compositeSignal, g_aBnWMonitorCustom);
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}
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//===========================================================================
static void updatePixelBnWColorTVSingleScanline (uint16_t compositeSignal)
2014-12-31 22:53:55 +00:00
{
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updateFramebufferColorTVSingleScanline(compositeSignal, g_aBnWColorTVCustom);
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}
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//===========================================================================
static void updatePixelBnWColorTVDoubleScanline (uint16_t compositeSignal)
2014-12-31 22:53:55 +00:00
{
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updateFramebufferColorTVDoubleScanline(compositeSignal, g_aBnWColorTVCustom);
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}
2015-01-01 17:59:58 +00:00
//===========================================================================
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void updateMonochromeTables( uint16_t r, uint16_t g, uint16_t b )
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{
for( int iSample = 0; iSample < NTSC_NUM_SEQUENCES; iSample++ )
{
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g_aBnWMonitorCustom[ iSample ].b = (g_aBnWMonitor[ iSample ].b * b) >> 8;
g_aBnWMonitorCustom[ iSample ].g = (g_aBnWMonitor[ iSample ].g * g) >> 8;
g_aBnWMonitorCustom[ iSample ].r = (g_aBnWMonitor[ iSample ].r * r) >> 8;
g_aBnWMonitorCustom[ iSample ].a = 0xFF;
g_aBnWColorTVCustom[ iSample ].b = (g_aBnwColorTV[ iSample ].b * b) >> 8;
g_aBnWColorTVCustom[ iSample ].g = (g_aBnwColorTV[ iSample ].g * g) >> 8;
g_aBnWColorTVCustom[ iSample ].r = (g_aBnwColorTV[ iSample ].r * r) >> 8;
g_aBnWColorTVCustom[ iSample ].a = 0xFF;
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}
}
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//===========================================================================
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void NTSC_SetVideoTextMode( int cols )
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{
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if( cols == 40 )
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g_pFuncUpdateTextScreen = updateScreenText40;
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else
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g_pFuncUpdateTextScreen = updateScreenText80;
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}
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//===========================================================================
void NTSC_SetVideoMode( int bVideoModeFlags )
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{
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g_nVideoMixed = bVideoModeFlags & VF_MIXED;
g_nVideoCharSet = g_nAltCharSetOffset != 0;
2014-12-31 22:53:55 +00:00
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g_nTextPage = 1;
g_nHiresPage = 1;
if (bVideoModeFlags & VF_PAGE2) {
if (0 == (bVideoModeFlags & VF_80STORE)) {
g_nTextPage = 2;
g_nHiresPage = 2;
}
}
2014-12-31 22:53:55 +00:00
2015-01-02 06:04:38 +00:00
if (bVideoModeFlags & VF_TEXT) {
if (bVideoModeFlags & VF_80COL)
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g_pFuncUpdateGraphicsScreen = updateScreenText80;
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else
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g_pFuncUpdateGraphicsScreen = updateScreenText40;
}
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else if (bVideoModeFlags & VF_HIRES) {
if (bVideoModeFlags & VF_DHIRES)
if (bVideoModeFlags & VF_80COL)
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g_pFuncUpdateGraphicsScreen = updateScreenDoubleHires80;
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else
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g_pFuncUpdateGraphicsScreen = updateScreenDoubleHires40;
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else
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g_pFuncUpdateGraphicsScreen = updateScreenSingleHires40;
}
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else {
if (bVideoModeFlags & VF_DHIRES)
if (bVideoModeFlags & VF_80COL)
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g_pFuncUpdateGraphicsScreen = updateScreenDoubleLores80;
2014-12-31 22:53:55 +00:00
else
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g_pFuncUpdateGraphicsScreen = updateScreenDoubleLores40;
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else
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g_pFuncUpdateGraphicsScreen = updateScreenSingleLores40;
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}
}
//===========================================================================
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void NTSC_SetVideoStyle() // (int v, int s)
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{
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int half = g_uHalfScanLines;
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uint8_t r, g, b;
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switch ( g_eVideoType )
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{
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case VT_COLOR_TVEMU: // VT_COLOR_TV: // 0:
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if (half)
{
g_pFuncUpdateBnWPixel = updatePixelBnWColorTVSingleScanline;
g_pFuncUpdateHuePixel = updatePixelHueColorTVSingleScanline;
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}
else {
g_pFuncUpdateBnWPixel = updatePixelBnWColorTVDoubleScanline;
g_pFuncUpdateHuePixel = updatePixelHueColorTVDoubleScanline;
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}
break;
2014-12-31 22:53:55 +00:00
2015-01-02 06:04:38 +00:00
case VT_COLOR_STANDARD: // VT_COLOR_MONITOR: //1:
default:
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if (half)
{
g_pFuncUpdateBnWPixel = updatePixelBnWMonitorSingleScanline;
g_pFuncUpdateHuePixel = updatePixelHueMonitorSingleScanline;
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}
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else {
g_pFuncUpdateBnWPixel = updatePixelBnWMonitorDoubleScanline;
g_pFuncUpdateHuePixel = updatePixelHueMonitorDoubleScanline;
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}
break;
2014-12-31 22:53:55 +00:00
2015-01-02 06:04:38 +00:00
case VT_COLOR_TEXT_OPTIMIZED: // VT_MONO_TV: //2:
r = 0xFF;
g = 0xFF;
b = 0xFF;
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updateMonochromeTables( r, g, b ); // Custom Monochrome color
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if (half)
{
g_pFuncUpdateBnWPixel = g_pFuncUpdateHuePixel = updatePixelBnWColorTVSingleScanline;
2014-12-31 22:53:55 +00:00
}
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else {
g_pFuncUpdateBnWPixel = g_pFuncUpdateHuePixel = updatePixelBnWColorTVDoubleScanline;
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}
break;
2014-12-31 22:53:55 +00:00
2015-01-02 06:04:38 +00:00
// case VT_MONO_WHITE: //VT_MONO_MONITOR: //3:
case VT_MONO_AMBER:
r = 0xFF;
g = 0x80;
b = 0x00;
goto _mono;
case VT_MONO_GREEN:
r = 0x00;
g = 0xC0;
b = 0x00;
goto _mono;
case VT_MONO_WHITE:
r = 0xFF;
g = 0xFF;
b = 0xFF;
goto _mono;
case VT_MONO_HALFPIXEL_REAL:
// From WinGDI.h
// #define RGB(r,g,b) ((COLORREF)(((BYTE)(r)|((WORD)((BYTE)(g))<<8))|(((DWORD)(BYTE)(b))<<16)))
//#define GetRValue(rgb) (LOBYTE(rgb))
//#define GetGValue(rgb) (LOBYTE(((WORD)(rgb)) >> 8))
//#define GetBValue(rgb) (LOBYTE((rgb)>>16))
r = (g_nMonochromeRGB >> 0) & 0xFF;
g = (g_nMonochromeRGB >> 8) & 0xFF;
b = (g_nMonochromeRGB >> 16) & 0xFF;
_mono:
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updateMonochromeTables( r, g, b ); // Custom Monochrome color
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if (half)
{
g_pFuncUpdateBnWPixel = g_pFuncUpdateHuePixel = updatePixelBnWMonitorSingleScanline;
2015-01-02 06:04:38 +00:00
}
2015-01-02 07:50:04 +00:00
else
{
g_pFuncUpdateBnWPixel = g_pFuncUpdateHuePixel = updatePixelBnWMonitorDoubleScanline;
2015-01-02 06:04:38 +00:00
}
break;
}
}
2014-12-31 22:53:55 +00:00
//===========================================================================
2015-01-03 04:00:24 +00:00
void updateScreenDoubleHires40 (long cycles6502) // wsUpdateVideoHires0
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{
unsigned ad;
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if (g_nVideoMixed && g_nVideoClockVert >= VIDEO_SCANNER_Y_MIXED)
2014-12-31 22:53:55 +00:00
{
2015-01-03 03:46:40 +00:00
g_pFuncUpdateTextScreen( cycles6502 );
2015-01-02 07:50:04 +00:00
return;
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}
2015-01-02 07:50:04 +00:00
for (; cycles6502; --cycles6502)
2014-12-31 22:53:55 +00:00
{
2015-01-02 07:50:04 +00:00
UpdateVideoAddressHGR();
2014-12-31 22:53:55 +00:00
2015-01-02 07:50:04 +00:00
if (g_nVideoClockVert < VIDEO_SCANNER_Y_DISPLAY)
2014-12-31 22:53:55 +00:00
{
2015-01-02 07:50:04 +00:00
if ((g_nVideoClockHorz < VIDEO_SCANNER_HORZ_COLORBURST_END) && (g_nVideoClockHorz >= VIDEO_SCANNER_HORZ_COLORBURST_BEG))
{
g_nColorBurstPixels = 1024;
}
else if (g_nVideoClockHorz >= VIDEO_SCANNER_HORZ_START)
2014-12-31 22:53:55 +00:00
{
uint8_t *pMain = MemGetMainPtr(ad);
2015-01-02 07:50:04 +00:00
uint8_t m = pMain[0];
uint16_t bits = g_aPixelDoubleMaskHGR[m & 0x7F]; // Optimization: hgrbits second 128 entries are mirror of first 128
updatePixels( bits );
2014-12-31 22:53:55 +00:00
}
}
2015-01-03 04:00:24 +00:00
updateVideoScannerHorzEOL();
2014-12-31 22:53:55 +00:00
}
}
//===========================================================================
2015-01-03 04:00:24 +00:00
void updateScreenDoubleHires80 (long cycles6502 ) // wsUpdateVideoDblHires
2014-12-31 22:53:55 +00:00
{
unsigned ad;
2015-01-02 07:50:04 +00:00
uint16_t bits;
2014-12-31 22:53:55 +00:00
if (g_nVideoMixed && g_nVideoClockVert >= VIDEO_SCANNER_Y_MIXED)
{
2015-01-03 03:46:40 +00:00
g_pFuncUpdateTextScreen( cycles6502 );
2014-12-31 22:53:55 +00:00
return;
}
2015-01-02 07:50:04 +00:00
for (; cycles6502; --cycles6502)
2014-12-31 22:53:55 +00:00
{
2015-01-02 07:50:04 +00:00
UpdateVideoAddressHGR();
2014-12-31 22:53:55 +00:00
if (g_nVideoClockVert < VIDEO_SCANNER_Y_DISPLAY)
{
2015-01-02 07:50:04 +00:00
if ((g_nVideoClockHorz < VIDEO_SCANNER_HORZ_COLORBURST_END) && (g_nVideoClockHorz >= VIDEO_SCANNER_HORZ_COLORBURST_BEG))
2014-12-31 22:53:55 +00:00
{
g_nColorBurstPixels = 1024;
}
else if (g_nVideoClockHorz >= VIDEO_SCANNER_HORZ_START)
{
2015-01-02 07:50:04 +00:00
uint8_t *pMain = MemGetMainPtr(ad);
uint8_t *pAux = MemGetAuxPtr(ad);
uint8_t m = pMain[0];
uint8_t a = pAux [0];
bits = ((m & 0x7f) << 7) | (a & 0x7f);
bits = (bits << 1) | g_nLastColumnPixelNTSC;
updatePixels( bits );
2015-01-02 07:50:04 +00:00
g_nLastColumnPixelNTSC = (bits >> 14) & 3;
2014-12-31 22:53:55 +00:00
}
}
2015-01-03 04:00:24 +00:00
updateVideoScannerHorzEOL();
2014-12-31 22:53:55 +00:00
}
}
//===========================================================================
2015-01-03 04:00:24 +00:00
void updateScreenDoubleLores40 (long cycles6502) // wsUpdateVideo7MLores
2014-12-31 22:53:55 +00:00
{
unsigned ad;
2014-12-31 22:53:55 +00:00
if (g_nVideoMixed && g_nVideoClockVert >= VIDEO_SCANNER_Y_MIXED)
{
2015-01-03 03:46:40 +00:00
g_pFuncUpdateTextScreen( cycles6502 );
2014-12-31 22:53:55 +00:00
return;
}
2015-01-02 07:50:04 +00:00
for (; cycles6502; --cycles6502)
2014-12-31 22:53:55 +00:00
{
UpdateVideoAddressTXT();
if (g_nVideoClockVert < VIDEO_SCANNER_Y_DISPLAY)
{
2015-01-02 07:50:04 +00:00
if ((g_nVideoClockHorz < VIDEO_SCANNER_HORZ_COLORBURST_END) && (g_nVideoClockHorz >= VIDEO_SCANNER_HORZ_COLORBURST_BEG))
2014-12-31 22:53:55 +00:00
{
g_nColorBurstPixels = 1024;
}
else if (g_nVideoClockHorz >= VIDEO_SCANNER_HORZ_START)
{
uint8_t *pMain = MemGetMainPtr(ad);
uint8_t m = pMain[0];
uint16_t lo = getLoResBits( m );
2015-01-02 07:50:04 +00:00
uint16_t bits = g_aPixelDoubleMaskHGR[(0xFF & lo >> ((1 - (g_nVideoClockHorz & 1)) * 2)) & 0x7F]; // Optimization: hgrbits
updatePixels( bits );
2014-12-31 22:53:55 +00:00
}
}
2015-01-03 04:00:24 +00:00
updateVideoScannerHorzEOL();
2014-12-31 22:53:55 +00:00
}
}
//===========================================================================
2015-01-03 04:00:24 +00:00
void updateScreenDoubleLores80 (long cycles6502) // wsUpdateVideoDblLores
2014-12-31 22:53:55 +00:00
{
unsigned ad;
2014-12-31 22:53:55 +00:00
if (g_nVideoMixed && g_nVideoClockVert >= VIDEO_SCANNER_Y_MIXED)
{
2015-01-03 03:46:40 +00:00
g_pFuncUpdateTextScreen( cycles6502 );
2014-12-31 22:53:55 +00:00
return;
}
2015-01-02 07:50:04 +00:00
for (; cycles6502; --cycles6502)
2014-12-31 22:53:55 +00:00
{
UpdateVideoAddressTXT();
if (g_nVideoClockVert < VIDEO_SCANNER_Y_DISPLAY)
{
2015-01-02 07:50:04 +00:00
if ((g_nVideoClockHorz < VIDEO_SCANNER_HORZ_COLORBURST_END) && (g_nVideoClockHorz >= VIDEO_SCANNER_HORZ_COLORBURST_BEG))
2014-12-31 22:53:55 +00:00
{
g_nColorBurstPixels = 1024;
}
else if (g_nVideoClockHorz >= VIDEO_SCANNER_HORZ_START)
{
uint8_t *pMain = MemGetMainPtr(ad);
uint8_t *pAux = MemGetAuxPtr(ad);
2014-12-31 22:53:55 +00:00
uint8_t m = pMain[0];
uint8_t a = pAux [0];
uint16_t lo = getLoResBits( m );
uint16_t hi = getLoResBits( a );
uint16_t main = lo >> (((1 - (g_nVideoClockHorz & 1)) * 2) + 3);
uint16_t aux = hi >> (((1 - (g_nVideoClockHorz & 1)) * 2) + 3);
uint16_t bits = (main << 7) | (aux & 0x7f);
updatePixels( bits );
2015-01-02 06:45:40 +00:00
g_nLastColumnPixelNTSC = (bits >> 14) & 3;
2014-12-31 22:53:55 +00:00
}
}
2015-01-03 04:00:24 +00:00
updateVideoScannerHorzEOL();
2014-12-31 22:53:55 +00:00
}
}
//===========================================================================
2015-01-03 04:00:24 +00:00
void updateScreenSingleHires40 (long cycles6502)
2014-12-31 22:53:55 +00:00
{
unsigned ad;
2014-12-31 22:53:55 +00:00
if (g_nVideoMixed && g_nVideoClockVert >= VIDEO_SCANNER_Y_MIXED)
{
2015-01-03 03:46:40 +00:00
g_pFuncUpdateTextScreen( cycles6502 );
2014-12-31 22:53:55 +00:00
return;
}
2015-01-02 07:50:04 +00:00
for (; cycles6502; --cycles6502)
2014-12-31 22:53:55 +00:00
{
UpdateVideoAddressHGR();
if (g_nVideoClockVert < VIDEO_SCANNER_Y_DISPLAY)
{
2015-01-02 07:50:04 +00:00
if ((g_nVideoClockHorz < VIDEO_SCANNER_HORZ_COLORBURST_END) && (g_nVideoClockHorz >= VIDEO_SCANNER_HORZ_COLORBURST_BEG))
2014-12-31 22:53:55 +00:00
{
g_nColorBurstPixels = 1024;
}
else if (g_nVideoClockHorz >= VIDEO_SCANNER_HORZ_START)
{
2015-01-02 07:50:04 +00:00
uint8_t *pMain = MemGetMainPtr(ad);
uint8_t m = pMain[0];
uint16_t bits = g_aPixelDoubleMaskHGR[m & 0x7F]; // Optimization: hgrbits second 128 entries are mirror of first 128
if (m & 0x80)
bits = (bits << 1) | g_nLastColumnPixelNTSC;
updatePixels( bits );
2014-12-31 22:53:55 +00:00
}
}
2015-01-03 04:00:24 +00:00
updateVideoScannerHorzEOL();
2014-12-31 22:53:55 +00:00
}
}
//===========================================================================
2015-01-03 04:00:24 +00:00
void updateScreenSingleLores40 (long cycles6502)
2014-12-31 22:53:55 +00:00
{
unsigned ad;
2014-12-31 22:53:55 +00:00
if (g_nVideoMixed && g_nVideoClockVert >= VIDEO_SCANNER_Y_MIXED)
{
2015-01-03 03:46:40 +00:00
g_pFuncUpdateTextScreen( cycles6502 );
2014-12-31 22:53:55 +00:00
return;
}
2015-01-02 07:50:04 +00:00
for (; cycles6502; --cycles6502)
2014-12-31 22:53:55 +00:00
{
2015-01-02 07:50:04 +00:00
UpdateVideoAddressTXT();
2014-12-31 22:53:55 +00:00
if (g_nVideoClockVert < VIDEO_SCANNER_Y_DISPLAY)
{
2015-01-02 07:50:04 +00:00
if ((g_nVideoClockHorz < VIDEO_SCANNER_HORZ_COLORBURST_END) && (g_nVideoClockHorz >= VIDEO_SCANNER_HORZ_COLORBURST_BEG))
2014-12-31 22:53:55 +00:00
{
g_nColorBurstPixels = 1024;
}
else if (g_nVideoClockHorz >= VIDEO_SCANNER_HORZ_START)
{
uint8_t *pMain = MemGetMainPtr(ad);
uint8_t m = pMain[0];
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uint16_t lo = getLoResBits( m );
uint16_t bits = lo >> ((1 - (g_nVideoClockHorz & 1)) * 2);
updatePixels( bits );
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}
}
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updateVideoScannerHorzEOL();
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}
}
//===========================================================================
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void updateScreenText40 (long cycles6502)
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{
unsigned ad;
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for (; cycles6502; --cycles6502)
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{
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UpdateVideoAddressTXT();
if ((g_nVideoClockHorz < VIDEO_SCANNER_HORZ_COLORBURST_END) && (g_nVideoClockHorz >= VIDEO_SCANNER_HORZ_COLORBURST_BEG))
{
if (g_nColorBurstPixels > 0)
g_nColorBurstPixels -= 1;
}
else if (g_nVideoClockVert < VIDEO_SCANNER_Y_DISPLAY)
{
if (g_nVideoClockHorz >= VIDEO_SCANNER_HORZ_START)
{
uint8_t *pMain = MemGetMainPtr(ad);
uint8_t m = pMain[0];
uint8_t c = getCharSetBits(m);
uint16_t bits = g_aPixelDoubleMaskHGR[c & 0x7F]; // Optimization: hgrbits second 128 entries are mirror of first 128
if (0 == g_nVideoCharSet && 0x40 == (m & 0xC0))
bits ^= g_nTextFlashMask;
updatePixels( bits );
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}
}
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updateVideoScannerHorzEOL();
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}
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}
//===========================================================================
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void updateScreenText80 (long cycles6502)
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{
unsigned int ad;
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for (; cycles6502; --cycles6502)
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{
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UpdateVideoAddressTXT();
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if ((g_nVideoClockHorz < VIDEO_SCANNER_HORZ_COLORBURST_END) && (g_nVideoClockHorz >= VIDEO_SCANNER_HORZ_COLORBURST_BEG))
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{
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if (g_nColorBurstPixels > 0)
g_nColorBurstPixels -= 1;
}
else if (g_nVideoClockVert < VIDEO_SCANNER_Y_DISPLAY)
{
if (g_nVideoClockHorz >= VIDEO_SCANNER_HORZ_START)
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{
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uint8_t *pAux = MemGetAuxPtr(ad);
uint8_t *pMain = MemGetMainPtr(ad);
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uint8_t m = pMain[0];
uint8_t a = pAux [0];
uint16_t main = getCharSetBits( m );
uint16_t aux = getCharSetBits( a );
if ((0 == g_nVideoCharSet) && 0x40 == (m & 0xC0))
main ^= g_nTextFlashMask;
if ((0 == g_nVideoCharSet) && 0x40 == (a & 0xC0))
aux ^= g_nTextFlashMask;
uint16_t bits = (main << 7) | aux;
updatePixels( bits );
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}
}
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updateVideoScannerHorzEOL();
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}
}
//===========================================================================
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unsigned char NTSC_VideoByte (unsigned long cycles6502)
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{
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unsigned char * mem;
mem = MemGetMainPtr(g_aHorzClockMemAddress[ g_nVideoClockHorz ]);
return mem[0];
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}
//===========================================================================
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void NTSC_VideoInit( uint8_t* pFramebuffer ) // wsVideoInit
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{
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make_csbits();
init_video_tables();
init_chroma_phase_table();
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updateMonochromeTables( 0xFF, 0xFF, 0xFF );
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for (int y = 0; y < (VIDEO_SCANNER_Y_DISPLAY*2); y++)
g_pScanLines[y] = (bgra_t*)(g_pFramebufferbits + 4 * FRAMEBUFFER_W * ((FRAMEBUFFER_H - 1) - y - 18) + 80);
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g_pVideoAddress = g_pScanLines[0];
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g_pFuncUpdateTextScreen = updateScreenText40;
g_pFuncUpdateGraphicsScreen = updateScreenText40;
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VideoReinitialize(); // Setup g_pFunc_ntsc*Pixel()
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#if HGR_TEST_PATTERN
// Michael -- Init HGR to almost all-possible-combinations
// CALL-151
// C050 C053 C057
unsigned char b = 0;
unsigned char *main, *aux;
for( unsigned page = 0; page < 2; page++ )
{
for( unsigned w = 0; w < 2; w++ ) // 16 cols
{
for( unsigned z = 0; z < 2; z++ ) // 8 cols
{
b = 0; // 4 columns * 64 rows
for( unsigned x = 0; x < 4; x++ ) // 4 cols
{
for( unsigned y = 0; y < 64; y++ ) // 1 col
{
unsigned y2 = y*2;
ad = 0x2000 + (y2&7)*0x400 + ((y2/8)&7)*0x80 + (y2/64)*0x28 + 2*x + 10*z + 20*w;
ad += 0x2000*page;
main = MemGetMainPtr(ad);
aux = MemGetAuxPtr (ad);
main[0] = b; main[1] = w + page*0x80;
aux [0] = z; aux [1] = 0;
y2 = y*2 + 1;
ad = 0x2000 + (y2&7)*0x400 + ((y2/8)&7)*0x80 + (y2/64)*0x28 + 2*x + 10*z + 20*w;
ad += 0x2000*page;
main = MemGetMainPtr(ad);
aux = MemGetAuxPtr (ad);
main[0] = 0; main[1] = w + page*0x80;
aux [0] = b; aux [1] = 0;
b++;
}
}
}
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}
}
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#endif
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}
//===========================================================================
void NTSC_VideoInitAppleType ()
{
int model = g_Apple2Type;
// anything other than low bit set means not II/II+
if (model & 0xFFFE)
g_pHorzClockOffset = APPLE_IIE_HORZ_CLOCK_OFFSET;
else
g_pHorzClockOffset = APPLE_IIP_HORZ_CLOCK_OFFSET;
}
//===========================================================================
int NTSC_VideoIsVbl ()
{
return (g_nVideoClockVert >= VIDEO_SCANNER_Y_DISPLAY) && (g_nVideoClockVert < VIDEO_SCANNER_MAX_VERT);
}
// Light-weight Video Clock Update
//===========================================================================
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void NTSC_VideoUpdateCycles( long cycles6502 )
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{
bool bRedraw = cycles6502 >= VIDEO_SCANNER_6502_CYCLES;
// if( g_bFullSpeed )
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// g_pFuncUpdateGraphicsScreen( cycles6502 );
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// else
while( cycles6502 > VIDEO_SCANNER_6502_CYCLES )
/* */ cycles6502 -= VIDEO_SCANNER_6502_CYCLES ;
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for( ; cycles6502 > 0; cycles6502-- )
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{
if (VIDEO_SCANNER_MAX_HORZ == ++g_nVideoClockHorz)
{
g_nVideoClockHorz = 0;
if (g_nVideoClockVert < VIDEO_SCANNER_Y_DISPLAY)
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g_apFuncVideoUpdateScanline[ g_nVideoClockVert ] = g_pFuncUpdateGraphicsScreen;
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if (++g_nVideoClockVert == VIDEO_SCANNER_MAX_VERT)
{
g_nVideoClockVert = 0;
if ((++g_nTextFlashCounter & 0xF) == 0)
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g_nTextFlashMask ^= -1; // 16-bits
bRedraw = true;
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}
if (g_nVideoClockVert < VIDEO_SCANNER_Y_DISPLAY)
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updateVideoScannerAddress();
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}
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}
if( bRedraw ) // Force full refresh
{
for( int y = 0; y < VIDEO_SCANNER_Y_DISPLAY; y++ )
g_apFuncVideoUpdateScanline[ y ]( VIDEO_SCANNER_MAX_HORZ );
int nCyclesVBlank = (VIDEO_SCANNER_MAX_VERT - VIDEO_SCANNER_Y_DISPLAY) * VIDEO_SCANNER_MAX_HORZ;
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g_pFuncUpdateGraphicsScreen( nCyclesVBlank );
}
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}